Speedometer.



E. M. GILES.

SPEEDGMETER. APPLICATION FILED DEC. ll. 19H.

1,227,420, Patented May 22,1917.

;; 'rED STATES PATENT OFFICE.

EUGENE M. GILES, OEPEORIA, ILLINOIS.

, SPEEDOMETER.

Application filed'Decembei' 11,1911. 1S,eria1;IiTo.665,Q43.

To all whom it may concern:

Be it known that I, EUGENE M. GILES, a citizen of the-United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented a new and useful Speedometer, of which the following is thespecification. Y

My invention relates to improvements in speedometers, and the object ofmy invention is to produce a simple, accurate and durable speedindicating mechanism.

In the accompanying drawing which illustrates my invention, Figure 1 isa top or face View of the speedometer; Fig. 2 a side View of thespeedometer; Fig. 3 an enlarged sectional View on the line w-a of Fig.1, said view showing the position of the mechanism when the indicatinghand points to the number 30 on the dial face; Fig. 4 a View on the linebb of 3 showing the parts in the normal position when the indicatinghand points to 0 on the dial face; Fig. 5 an enlarged section on theline 00 of Fig. 1 showing the mileage dials; and Fig. 6 is a top view ofthe gears which operate the dials. V

1 is the case, 2 the graduated .face, and 3 the glass, allof which areheld together as shown or in any other suitable way. 4, 5, 6, and 7 areframe pieces which are spaced and held together by four posts andsleeves, indicated at 8. 9 is the speed indicating hand which is mountedon the spindle 10, and this spindle is mounted in the frame pieces 6 and7 so as to turn very freely. Fixed on the spindle 10 is a frame 11 whichturns therewith and is held normally in the position with the hand 9 at0 by means of the spring 12 which is attached at its outer end to a lug13 on the frame 7 and at its inner end to the spindle 10. This frame 11carries at its outer end integral gears 14: and 15 which are pivoted inthe frame to turn very freely, and the entire frame and gears areperfectly balanced by means of the weight 33 on the frame 11.

16 is a stub shaft which is squared at one end or otherwise constructedso as to receive the end of the flexible speedometer shaft 34 and thisshaft 16 has a bevel gear 17 which meshes with the bevel gear 18, andcommunicates power through the gears 19, 20, 21, which are mounted inthe frame pieces 5 and 6 and the gear 22 which is mounted on a stub ofthe frame 6 concentric with the spindle 10, to the gear 14.

Specification of Letters Patent.

' PatentedMay 1917.

Concentric with the gear 22 is a spindle 23 which carries a fan 24 andhas the gear 25 thereon in mesh with the gear 15 so as to be driventhereby. I Y

As is apparent the fan 24: provides a resistance which varies with itsspeed and in operation the frame'll and gears 14 and 15 turn against thetension of the spring '12 until the tension of the spring equals theresistance of the fan. The faster the fan is driven the farther the.frame 11 and hand 9 are turned and the speed is thereby indis cated.. pThe mileage is. recorded through the worm and worm wheel. 26 and 27respectively and the wormand worm wheel 28 and 29 respectively totheusual dial operating gears 30 which have dials '31- thereon whosefigures are visible through the openings 32 in the face plate 2. I

Having thus fully described my invention, what I claim and desire tosecureby Letters Patent of the United States is;

1. In a device ofthe class described, the combination of anoscillatingstructure, an indicating means operated by the oscillating structure,meansfor yieldingly holding the oscillating structureat one extremity ofits oscillation, a rotary drive member concentric with theoscillatingstructure, means for supporting the said rotary drive memberindependently of the oscillating structure, a rotary driven memberpivoted eccentrically on the'oscillatin structure, and a resistanceelement operate by the driven member.

2. In a device ofthe class described', the combination of a frame, anoscillating member pivoted in said frame, a stationary part on'the'frame projecting axially of the QS-s cillating member, driven means onthefioscillating member positioned to swing around said projectingstationarypart on the frame, a driving member on the said projectingstationary part cooperating with" the said -driven means-on theoscillating partfor oscillating the oscillating member,anindicatlngmeans operatedby the oscillating memher, and means foryieldingly holding the part comprising a driven member mounted on theoscillating part at a distance from the axis, a drive member mounted onthe said stationary hub for operating the driven member on theoscillating part, and escape ment means for providing a slippage in thetransmission of power to the oscillating part for regulating the amountof oscillation,

means for yieldingly holding the oscillating part at one extremity ofits-oscillation, and indicating means movable with the oscillating part.V

4:. In a device of the class described, the combination of anoscillating part, a stationary hub extending axially of the oscillatingpart, means foroperating the oscillating part comprising a driven memberdepending from the oscillating part at a regulating the amount ofoscillation, means for yieldingly holding the oscillating part at oneextremity of its oscillation, and'indr eating means movablewith theoscillating art. p 5. In a device of the class described, thecombination of operating mechanism' driven at a speed proportionalto thespeed to be indicated, an oscillating part, indicating means operated bythe oscillating part, a casing v for supporting the operating mechanismand oscillating part, said casing being provided with a separate airchamber anda compartment containing the operating mechanism, said airchamber being provided with means for providing a slippage in thetransmission of power from the operatingmechanism to the oscillatingpart so as to cause of said oscillatory I frame being weighted and theopposite end formed to provide opposi g Po t P f co ne t d ea j rn ed insaid ppesing f ame p r io a gear freely rotatable o n'the frame'structure and meshin-g'with one of said connected ve device, a frame in ononnesits side of shaft, @116 end gears, a resistance element journaledinthe frame structure, a gear fixed to the resistance element insuperposed relation with the third gear and .meshing with the other of"said connected gears, and means for driving the third gear. r

' 7, In a speed responsive device, a'frame having a bearing plate, anindicator-shaft journaled in one sideof the plate, an oscillatory framefixed to the shaft resilient means holding the frame in one position, a

pair of connected gears journaled on the oscillatory frame at adistance: from the shaft, a gear 'journaled on the opposite side of thebearing plate in meshing relation 7 with one of the connectedgears,means for driving the third gear, a resistance element journaledin said last side of the bearing plate, and a gear fixed to theresistance ele ment inv meshing relation with the other connected gear.7 r

In witness whereof I have hereunto affixed my signature in the presenceof two subscribing witnesses.

Y r EUG NE M. GILES} Witnesses:

v NATHAN WEISS, Jos. F. BARTLEY.

Copies of this patentlmay be obtained for five cents each, by addressingthe Commissioner of Patez ats,

' washingtom 'b. G.

